docs: def forwards(apps, schema_editor):
      """
      Create initial recurrence rules.
      """
      RecurrenceRule = apps.get_model('icekit_events', 'RecurrenceRule')
      for description, recurrence_rule in RULES:
          RecurrenceRule.objects.get_or_create(
              description=description,
              defaults=dict(recurrence_rule=recurrence_rule),
          )